jsev/lib/logging/ConsoleStream.js

Environment for building Web API's.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const bunyan_1 = require("bunyan");
const chalk_1 = __importDefault(require("chalk"));
const lodash_1 = require("lodash");
const stream_1 = require("stream");
const util_1 = require("util");
const defaultOptions = {
    omitFromDetails: [
        "name",
        "hostname",
        "pid",
        "level",
        "component",
        "msg",
        "time",
        "v",
        "src",
        "err",
        "client_req",
        "client_res",
        "req",
        "res",
        "req_id",
        "table",
    ],
    showProcess: true,
    showTime: true,
};
class ConsoleStream extends stream_1.Writable {
    constructor(opts) {
        super();
        this.opts = { ...defaultOptions, ...opts };
    }
    write(data) {
        const dataObj = typeof data === "string" ? JSON.parse(data) : data;
        const output = this.format(dataObj);
        /* tslint:disable:no-console */
        if (dataObj.level < bunyan_1.INFO) {
            console.log(output);
        }
        else if (dataObj.level < bunyan_1.WARN) {
            console.info(output);
        }
        else if (dataObj.level < bunyan_1.ERROR) {
            console.warn(output);
        }
        else {
            console.error(output);
        }
        /* tslint:enable:no-console */
        return true;
    }
    getDetails(data) {
        const details = lodash_1.omit(data, this.opts.omitFromDetails);
        const output = details && Object.keys(details).length > 0
            ? util_1.inspect(details, { colors: true })
            : "";
        return chalk_1.default.cyan(output);
    }
    getMessage(data) {
        const { msg, level } = data;
        if (level >= bunyan_1.FATAL) {
            return chalk_1.default.bgRed.white(`FTL: ${msg}`);
        }
        else if (level >= bunyan_1.ERROR) {
            return chalk_1.default.redBright(`ERR: ${msg}`);
        }
        else if (level >= bunyan_1.WARN) {
            return chalk_1.default.yellow(`WRN: ${msg}`);
        }
        else if (level >= bunyan_1.INFO) {
            return chalk_1.default.white(`INF: ${msg}`);
        }
        else if (level >= bunyan_1.DEBUG) {
            return chalk_1.default.gray(`DBG: ${msg}`);
        }
        else if (level >= bunyan_1.TRACE) {
            return chalk_1.default.green(`TRC: ${msg}`);
        }
        return msg;
    }
    getTable(data) {
        const { table } = data;
        if (!table) {
            return "";
        }
        const widths = [];
        const padDirections = [];
        for (let i = 0; i < table.header.length; i++) {
            let dir = 0;
            const len = table.rows.reduce((a, x) => {
                const cLen = x[i].toString().length;
                if (!dir) {
                    dir = isNaN(Number(x[i])) ? 1 : -1;
                }
                return a > cLen ? a : cLen;
            }, table.header[i].length);
            widths.push(len);
            padDirections.push(dir);
        }
        const tWidth = widths.reduce((a, x) => a + x + 2, 1);
        const header = table.header.reduce((a, x, i) => `${a} ${chalk_1.default.bold.green(x.toString().padEnd(widths[i]))} |`, "|");
        const rows = table.rows.reduce((ra, row, ri) => {
            const r = row.reduce((a, x, i) => {
                let c = x;
                if (isNaN(Number(x))) {
                    c = c.toString().padEnd(widths[i]);
                }
                else {
                    c = chalk_1.default.magenta(c.toString().padStart(widths[i]));
                }
                return `${a} ${c} |`;
            }, "|");
            const startRow = ri === 0 ? "\t" : "\n\t";
            return `${ra}${startRow}${r}`;
        }, "");
        const str = `
\t+${"-".repeat(tWidth)}+
\t${header}
\t+${"-".repeat(tWidth)}+
${rows}
\t+${"-".repeat(tWidth)}+
`;
        return str;
    }
    getError(data) {
        return data.err ? chalk_1.default.red(`\n${data.err.stack}`) : "";
    }
    format(data) {
        const pid = this.opts.showProcess ? ` ${chalk_1.default.gray(data.pid)}` : "";
        const reqId = data.req_id ? ` ${chalk_1.default.cyan(data.req_id)}` : "";
        const time = this.opts.showTime ? data.time.toISOString() : "";
        const msg = this.getMessage(data);
        const details = this.getDetails(data);
        const table = this.getTable(data);
        const error = this.getError(data);
        const info = time + pid + reqId;
        return `[${info.trim()}] ${msg}${table}${error} ${details}`;
    }
}
exports.default = ConsoleStream;
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